From 2dd9f758365d25f8185fe4a76c7fd240a7dce2d9 Mon Sep 17 00:00:00 2001
From: twobit <twobit@lavabit.com>
Date: Mon, 6 Aug 2012 15:51:12 +0200
Subject: [PATCH] wrap freq lookup index

---
 firmware/synth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/firmware/synth.c b/firmware/synth.c
index d1a68c3..9e62124 100644
--- a/firmware/synth.c
+++ b/firmware/synth.c
@@ -227,7 +227,7 @@ uint16_t synth_mix(void)
 		synth_channel_t* chan = &channels[i];
 		const synth_instrument_t* inst = &instruments[chan->inst_nr];
 
-		chan->phase += freq_table[chan->note + wave_table[chan->pos][0]];
+		chan->phase += freq_table[(uint8_t)(chan->note + wave_table[chan->pos][0])];
 
 		uint8_t amp;
 		switch(wave_table[chan->pos][1]) {